3 # Copyright 2010 Ben Dooks <ben-linux@fluff.org>
8 # ./clksrc-change-registers.awk arch/arm/plat-s5pc1xx/include/plat/regs-clock.h < src > dst
10 function extract_value(s)
14 return substr(s, eqat+2, (comat-eqat)-2)
17 function remove_brackets(b)
19 return substr(b, 2, length(b)-2)
22 function splitdefine(l, p)
27 p[1] = remove_brackets(tp[3])
30 function find_length(f)
33 printf "find_length " f "\n" > "/dev/stderr"
44 printf "unknown legnth " f "\n" > "/dev/stderr"
48 function find_shift(s)
52 printf "cannot find shift " s "\n" > "/dev/stderr"
56 return substr(s, id+2)
62 print "too few arguments" > "/dev/stderr"
66 # read the header file and find the mask values that we will need
67 # to replace and create an associative array of values
69 while (getline line < ARGV[1] > 0) {
70 if (line ~ /\#define.*_MASK/ &&
71 !(line ~ /S5PC100_EPLL_MASK/) &&
72 !(line ~ /USB_SIG_MASK/)) {
73 splitdefine(line, fields)
76 printf "MASK " line "\n" > "/dev/stderr"
77 dmask[name,0] = find_length(fields[1])
78 dmask[name,1] = find_shift(fields[1])
80 printf "=> '" name "' LENGTH=" dmask[name,0] " SHIFT=" dmask[name,1] "\n" > "/dev/stderr"
99 if ((getline line) <= 0) {
100 printf "unexpected end of file" > "/dev/stderr"
104 if (line ~ /\.shift/) {
105 shift = extract_value(line)
106 } else if (line ~ /\.mask/) {
107 mask = extract_value(line)
108 } else if (line ~ /\.reg_divider/) {
109 reg_div = extract_value(line)
110 } else if (line ~ /\.reg_source/) {
111 reg_src = extract_value(line)
112 } else if (line ~ /\.divider_shift/) {
113 divshift = extract_value(line)
114 } else if (line ~ /{/) {
117 } else if (line ~ /}/) {
122 printf "shift '" shift "' ='" dmask[shift,0] "'\n" > "/dev/stderr"
123 printf "mask '" mask "'\n" > "/dev/stderr"
124 printf "dshft '" divshift "'\n" > "/dev/stderr"
125 printf "rdiv '" reg_div "'\n" > "/dev/stderr"
126 printf "rsrc '" reg_src "'\n" > "/dev/stderr"
130 sub(reg_src, reg_div, generated)
133 printf "/* rsrc " reg_src " */\n"
134 printf "/* rdiv " reg_div " */\n"
135 printf "/* shift " shift " */\n"
136 printf "/* mask " mask " */\n"
137 printf "/* generated " generated " */\n"
141 printf "\t.reg_div = { "
142 printf ".reg = " reg_div ", "
143 printf ".shift = " dmask[generated,1] ", "
144 printf ".size = " dmask[generated,0] ", "
148 printf "\t.reg_src = { "
149 printf ".reg = " reg_src ", "
150 printf ".shift = " dmask[mask,1] ", "
151 printf ".size = " dmask[mask,0] ", "
163 printf indent ":" line "\n" > "/dev/stderr"
167 // && ! /clksrc_clk.*=.*{/ { print $0 }